EP2024654A2 - Composant de palier à roulement et procédé de fabrication dudit composant - Google Patents

Composant de palier à roulement et procédé de fabrication dudit composant

Info

Publication number
EP2024654A2
EP2024654A2 EP07728009A EP07728009A EP2024654A2 EP 2024654 A2 EP2024654 A2 EP 2024654A2 EP 07728009 A EP07728009 A EP 07728009A EP 07728009 A EP07728009 A EP 07728009A EP 2024654 A2 EP2024654 A2 EP 2024654A2
Authority
EP
European Patent Office
Prior art keywords
carrier
metal layer
rolling bearing
metal
component
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP07728009A
Other languages
German (de)
English (en)
Other versions
EP2024654B1 (fr
Inventor
Doris GÜNTHER
Carsten Merklein
Peter Schuster
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schaeffler KG filed Critical Schaeffler KG
Publication of EP2024654A2 publication Critical patent/EP2024654A2/fr
Application granted granted Critical
Publication of EP2024654B1 publication Critical patent/EP2024654B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/64—Special methods of manufacture
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/18—After-treatment

Definitions

  • the invention relates to a rolling bearing component.
  • Rolling bearings are known to consist of at least two components, namely an inner ring and an outer ring, between which the rolling elements, be it balls or rollers or the like, run.
  • Such rotationally symmetrical rolling bearing components are produced by machining and then case hardened or carbonated to improve the rolling fatigue strength. Due to the stresses, for example, case hardening requires high carburizing depths of more than 2 mm, which require a heat treatment period of at least 15 to 20 hours, depending on the material selected. Further modifications of the edge layer properties are only possible by the choice of another, generally higher alloyed base material. The transition to a higher quality base material, however, is associated with higher costs.
  • the invention is therefore based on the problem to provide a rolling bearing component that can be produced in a simple and cost-effective manner.
  • a rolling bearing component consisting of a metallic carrier with a spray-compacted metal layer applied thereto, which is applied in a spray process and forms the rolling bearing raceway surface.
  • the rolling bearing component according to the invention is, unlike conventional Wälzlagerbau- Parts, no longer made of a homogeneous material, but machined from a composite material or a composite material in which at least the rolling bearing surface forming edge layer is made in a metal spray process.
  • a steel melt is atomized into spherical droplets in a gas stream in a gas atomiser.
  • the gas rapidly cools the metal droplets to a temperature that is between the liquidus and solidus temperatures, often below the solidus temperature.
  • the thus cooled drops move at high speed. They have a pasty consistency. If the drops then hit a surface at high speed, in this case the carrier, they compact on the basis of their own kinetic energy.
  • a prefabricated component can be used according to a first alternative of the invention. These can be an arbitrarily preformed, preferably near-net shape blank.
  • the carrier in a spray process as a spray-compacted component. That is, also for the preparation of the carrier to take advantage of the spray process, as described above, with the choice of the carrier material other property requirements play a role than in the choice of the material of the metal layer.
  • the invention further relates to a method for producing such a rolling bearing component.
  • This method is characterized in that a metal layer is sprayed onto a metallic carrier in a spraying process, which is subsequently reworked to form the rolling bearing raceway, for which purpose the metal layer is usually processed in a wide variety of mechanical processing methods.
  • a prefabricated part which is for forming an intimate metallic connection between a carrier and the Metal layer is preferably heated to a temperature close to the solidus temperature of the carrier metal, after which only the metal layer is sprayed.
  • the impinging, in the core still molten metal droplets immediately connect to the hot carrier surface and "alloy", thereby ensuring an intimate metallic connection of the two components.
  • a variant of the method provides for producing the carrier in a spraying process in a first step, for which the metal forming the carrier is sprayed onto a component holder, after which the metal layer is sprayed on in a second step.
  • the metal layer is sprayed onto the still warm carrier in order to ensure an intimate material connection.
  • the metal layer is always sprayed onto an already present carrier, be it in the form of a prefabricated component or a carrier prepared by itself in advance spray-compact, primarily allow the production of inner rings after the tool for carrying out the Spray method is relatively large and can not be introduced into a serving for producing an outer ring carrier.
  • another method according to the invention for producing a rolling bearing component provides, in a first step, for producing the metal layer in a spraying process, for which purpose the metal forming the metal layer is sprayed onto a component holder, and subsequently, in the second step, to produce the carrier by spraying the carrier metal onto the metal layer, after which, after removal of the component holder, the metal layer is processed to form the rolling bearing bearing surface.
  • the carrier metal is sprayed onto the still-warm metal layer.
  • the manufacturing order is reversed in this method compared with the order for producing an inner ring with spray-compacted carrier.
  • the metal layer is first sprayed onto the component holder, which then forms the inner rolling bearing surface of the outer ring.
  • the carrier is sprayed, which forms the exterior of the finished outer ring component.
  • FIG. 1 shows a sectional view through an inventive component in the form of an inner ring
  • FIG. 2 is a schematic diagram for explaining the production of the component of FIG. 1,
  • FIG. 3 is an enlarged longitudinal sectional view through an inventive component similar to that of FIG. 1,
  • Metal layer are produced in a spray process
  • Fig. 5 is a sectional view through another inventive component in the form of an outer ring
  • FIG. 6 is a schematic diagram for explaining the manufacture of the component from FIG. 5.
  • the support 2 is a prefabricated component made of a metal, as is customary for the production of machined rolling bearing components serves, exists.
  • the material of the metal layer 3 can be chosen as desired, as long as it is suitable for processing by spray compacting, preference being given to high-speed steels or heat-resistant steels.
  • the composition can be arbitrary, that is, the usual steel components such as C, N, Si, Mn, T, S, Cr, Mo, V, Nb, W and Fe as the remainder together with conventional impurities on the one hand so in their amount
  • they can be chosen so that the metal layer produced has the desired physical, chemical and mechanical properties.
  • the wear resistance can be individually influenced by the addition of suitable non-metallic particles such as aluminum oxide or silicon carbide in the form of balls or fibers in the melt.
  • this processing is further compacted in a mechanical post-processing initially to reduce the pore volume, for example by forging or rolling, after which the usual heat treatment takes place without the special case hardening, to which the processing of the metal layer 3 to form the outer bearing raceway surface 4 connects, this processing can also be done before the heat treatment.
  • a component holder 5 for example, a metal or ceramic tube, the prefabricated, an integral component of the later rolling bearing component forming carrier 2 is pushed, this via corresponding spacers optionally held in position.
  • the component holder 5 is accommodated in a feed device, which is not shown here in detail, via which it can be displaced linearly on the one hand, but can also be rotated on the other hand, as indicated by the two movement arrows. is placed.
  • a spraying device 6 which is not shown here in detail, moved past.
  • the spray device 6 sprays a gas atomizer finest metal droplets 7 of a molten metal in a protective gas stream on the support 2, so that with increasing residence time during rotation of the component holder 5, the metal layer is formed on the support 2.
  • the carrier 2 itself is heated, preferably to a temperature in the vicinity of its solidus temperature, so that an optimal adhesion of the sprayed metal layer 3 on the carrier 2 results in the interface area, it comes to a near-surface alloy formation. In the manner described, the entire carrier 2 is covered with the metal layer 3, after which it is removed from the reusable component holder 5 and reworked.
  • the component holder is required to accommodate the individual blanks (usually a plurality of individual blanks are lined up in a row) or when two-ply sprayed. If the parts are cut to length from a long pipe, only this is moved and rotated for spraying by means of the feed device.
  • FIG. 3 shows a schematic representation of a longitudinal section through a rolling bearing component 1 produced in this way. Shown is the component holder 5 on which retaining rings 8 are provided or pushed on in the example shown. Between these, the prefabricated carrier 2, which in the embodiment shown has a radially projecting, integrally formed annular collar 9, arranged. On the support 2, the metal layer 3 is sprayed. This has an outer porous surface layer 10, which is to remove together with a certain proportion of the metal layer 3 to form the rolling body track 4 by machining.
  • the rolling body track 4 is shown in dashed lines in Fig. 3.
  • FIG. 2 shows the manufacture of a rolling bearing component using a prefabricated carrier
  • FIG. 4 shows a possibility of producing both the carrier 2 and the metal layer 3 in a metal spraying process.
  • Two spray devices 6a and 6b are provided which are connected downstream. Again, a reusable component holder 5. This is also linearly moved over a feed device not shown in detail and rotated simultaneously. He is first conveyed past the sprayer 6a. This sprayed finest metal droplets 1 1 of a molten steel, which serves for the preparation of the carrier 2, on the lateral surface of the component holder 5. This is formed by spray compaction of the carrier 2.
  • FIG. 5 shows another rolling bearing component 12 according to the invention, here in the form of an outer ring, with a support 13 forming the outer part of the component, on the inner diameter of which a metal layer 14, the inner surface of which forms the rolling bearing running surface 15, is provided.
  • the production of such Wälzlager- component 12 with an inner metal layer is also carried out in a process in which both the carrier 13 and the metal layer 14 are sprayed from the corresponding steel melts.
  • Fig. 6 shows the procedure according to the method in the form of a schematic diagram.
  • a reusable component holder 18 is used, as well as two sprayers 6a and 6b are provided here.
  • the component holder 18 is first passed by the sprayer 6a, which here sprays finest metal droplets 16, but here the metal that is needed to form the metal layer 14 directly on the O- ber Diagram of the component holder 18.
  • the sprayer 6a which here sprays finest metal droplets 16, but here the metal that is needed to form the metal layer 14 directly on the O- ber Diagram of the component holder 18.
  • the sprayer 6a which here sprays finest metal droplets 16, but here the metal that is needed to form the metal layer 14 directly on the O- ber Diagram of the component holder 18.
  • the sprayer 6a which here sprays finest metal droplets 16 but here the metal that is needed to form the metal layer 14 directly on the O- ber Diagram of the component holder 18.
  • the sprayer 6a which here sprays finest metal droplets 16, but here the metal that is needed to
  • the sprayed-on metal layer 14 reaches the working area of the spray device 6b, which sprays the finest metal droplets 17 of the molten steel onto the still hot outer surface of the metal layer 14 to form the carrier 13. Heating is not required here as a result of the residual heat of the metal layer 14. An intimate metallic connection also results here between the metal of the metal layer 14 and that of the carrier 13.
  • the thickness of the metal layer and the thickness of the prefabricated carrier or the thickness of the carrier produced by spray-compaction can be arbitrary, preferably they are in a similar thick range.
  • the thickness of the support for an inner ring for receiving a shaft having a diameter of 100 mm may be about 10 mm, while the thickness of the metal layer may be about 6 - 8 mm.
  • the thicknesses of a corresponding, the rolling bearing final outer ring are similar areas. The thicknesses vary according to the size of the diameter of the respective rolling bearing component. List of reference numbers

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Rolling Contact Bearings (AREA)

Abstract

L'invention concerne un composant de palier à roulement (1, 12), constitué d'un support métallique (2, 13) sur lequel une couche de métal (3, 14) est appliquée par un procédé de pulvérisation, laquelle couche est comprimée par pulvérisation et forme la surface de roulement (4, 15) du palier à roulement.
EP07728009.7A 2006-05-19 2007-04-12 Procédé de fabrication d'un composant de palier à roulement Expired - Fee Related EP2024654B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006023567A DE102006023567A1 (de) 2006-05-19 2006-05-19 Wälzlagerbauteil und Verfahren zur Herstellung eines solchen
PCT/EP2007/053541 WO2007134913A2 (fr) 2006-05-19 2007-04-12 Composant de palier à roulement et procédé de fabrication dudit composant

Publications (2)

Publication Number Publication Date
EP2024654A2 true EP2024654A2 (fr) 2009-02-18
EP2024654B1 EP2024654B1 (fr) 2016-01-27

Family

ID=38330021

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07728009.7A Expired - Fee Related EP2024654B1 (fr) 2006-05-19 2007-04-12 Procédé de fabrication d'un composant de palier à roulement

Country Status (5)

Country Link
US (1) US8292513B2 (fr)
EP (1) EP2024654B1 (fr)
CN (1) CN101449072B (fr)
DE (1) DE102006023567A1 (fr)
WO (1) WO2007134913A2 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010053029A1 (de) 2010-12-02 2012-06-06 Peak-Werkstoff Gmbh Verfahren zur Herstellung eines aus zumindest zwei Metallschichten bestehenden hohlzylinderförmigen Bauteils
DE102011075810A1 (de) * 2011-05-13 2012-11-15 Voith Patent Gmbh Korrosionsbeständige walzenbeschichtung
DE102012204618A1 (de) * 2012-03-22 2013-09-26 Schaeffler Technologies AG & Co. KG Wälzlager mit einem Lagerring mit gehärteter Randzone
DE102012015405B4 (de) * 2012-08-03 2014-07-03 Federal-Mogul Burscheid Gmbh Zylinderlaufbuchse und Verfahren zu deren Herstellung
DE102013100853A1 (de) * 2013-01-29 2014-07-31 Pfeiffer Vacuum Gmbh Verfahren zum Beschichten und/oder Lackieren von Magnetringen eines Rotor-Magnetlagers, Rotor-Magnetlager sowie Vakuumpumpe
US20150219405A1 (en) * 2014-02-05 2015-08-06 Lennox Industries Inc. Cladded brazed alloy tube for system components

Family Cites Families (19)

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DE47829C (de) 1888-12-14 1889-07-17 HALLE'sche ARMATUREN- UND MASCHINENFABRIK, A. WERNEBURG & CO., in Halle a. Saale Wasserabscheider für verticale Dampfleitungen
DD47829A5 (de) * 1963-10-30 1966-04-20 Rothe Erde Eisenwerk Wälzlagerring grossen Durchmessers, insbesondere Ring für mittenfreie Wälzlagerdrehverbindungen
US3372054A (en) * 1964-10-27 1968-03-05 Eutectic Welding Alloys Method of flame spraying and powder
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Also Published As

Publication number Publication date
US20090196542A1 (en) 2009-08-06
US8292513B2 (en) 2012-10-23
WO2007134913A3 (fr) 2008-02-14
WO2007134913A2 (fr) 2007-11-29
CN101449072A (zh) 2009-06-03
DE102006023567A1 (de) 2007-11-22
EP2024654B1 (fr) 2016-01-27
CN101449072B (zh) 2011-09-14

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